It sounds like your access point is connected via Ethernet cable back to the switch. POE is Powered Over Ethernet, where the access point’s power and data is received over the same single Ethernet cable. You can buy a new Ethernet cable from amazon, monoprice is a good brand. I would suggest this just to determine if the current Ethernet cable is “bad”. In the meantime, I would check your IP settings of the access points by logging into the Unleashed master AP. Do you know how to do that?